Awei AT15 ANC Bluetooth 6.0 Headphone Active Noise Cancellation 50 HRS

Bluetooth version 6.0 supported protocols: a2dp, avrcp, hfp, hsp bluetooth format: aac/sbc bluetooth operating frequency: 2.402ghz-2.480ghz bluetooth distance:>12m channel system: stereo working voltage: 3.2-4.2v working current: bt mode ≈ 15ma/anc noise reduction ≈ 25ma charging voltage: 5v charging current: 320ma battery capacity: 500mah charging time: 2h play time: 50 hours (anc off) talk time: 48 hours (anc off) noise reduction depth: -35 ± 3db speaker specification: 40mm sensitivity: 105 ± 2db impedance: 32 ω output power: 20mw frequency response: 20hz-20khz product weight: approximately 330g bare machine product size: interface: type-c